Photographic film.



PATBNTBD MAR. 15, 1904.

R. A ANTHONY. PHOTOGRAPHIG FILM.

v APIYLIOAIION FILED 001'. 8, 1903.

NC MODEL.

WITNESSES:

fim @j L ATTORNEY UNTTED STATES Patented March 15, 1904.

PATENT @EETCE.

RICHARD A. ANTHONY, OF NEW YORK, N. Y.

PHOTOGRAPHIC FILM.

SPECIFICATION forming part of Letters Patent No. 754,736, dated March15, 1904.

Application filed October 8, 1903. Serial No. 176,181. (No model.)

To all whom it may concern:

Be it known that I, RICHARD A. ANTHONY a citizen of the United States,and a resident of the borough of Manhattan, city, county, and State ofNew York, have invented a new and useful Improvement in PhotographicFilms, of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, in Which Figure 1illustrates an edgewise view of the opaque paper and its sensitizedcoating. Fig. 2 illustrates a plan view of the back of the opaque paper,showing the numerals and indications for exposures and cross-cutting.Fig. 3 illustrates the spool filled or loaded with the sensitized paperillustrated in Fig. 1. Fig. 4: illustrates an edgewise view of amodified construction. 7

I take a strip of smooth-surfaced paper of any suitable kind. The papershould be opaqueor treated so that the light cannot pass through toinjuriously affect the sensitized coating B, hereinafter to bedescribed. On the back of this strip of paper I produce in suitablecolored ink numerals or marks a to designate where to make the exposuresand also indications b where to cross-cut between them. I then sensitizethe opposite face of the paper with materials photographically sensitiveto the action of lightsuch, for example, as the well-knowngelatino-argentic emulsion, shown, as above stated, at B. Any othersuitable solution or emulsion may, however, be employed, and I vary thenature of the sensitive material and the proportions and manner ofmixing or combining the same according as Idesire to obtain greater orless sensitiveness to the action of light.

I prefer that the ends C C(see Fig. 2) of the opaque paper shall bothextend sufiiciently beyond the sensitized coating to make severalconvolutions or laps around it when they are wound together upon aspool, as hereinafter described, so that the sensitized material shallbe protected against the action of light. In winding the strip of opaquepaper, with its sensitized coating, upon the spool the sensitized sideof the paper is turned inwardly toof the spool center or axis D, whichis to be substantially as long as the width of the opaque paper, so thatit will fit snugly between the flanges, and thus prevent the entrance oflight at the edges, which would injuriously affect the sensitivesurface.

As above described, in winding the opaque paper and sensitized coatingupon the spool the first winding consists of several convolutions orlaps of the opaque paper. Then the opaque paper and its sensitizedcoating will be wound up together, the sensitized coating being, asstated, inward toward the axis of the spool, and finally there will beseveral laps or convolutions of the outer end of the opaque paper, whichin a manner now well known will protect the coiled-up sensitive surfacefrom the action of the light. I fasten the outer extremity of the opaquepaper with any suitable gummed paster F.

I prefer to print the marks upon this paper or fabric and sensitize thesame originally in wide bands and in long rolls and then cut theresulting product into suitable lengths and slit it into suitable widthsto fit spools of various sizes, and thus produce the product incartridge form suitable to fit various makes and sizes of cameras.

' Instead of confining the sensitized coating to a space between thenaked or uncoated ends of the opaque fabric I may coat the entire stripof fabric with the sensitized material; but, if so, some waste isnecessitated.

In Fig. l I illustrate a modified construction of the invention. In itthe sensitized coating B is applied to the fabric A the same as before;but in this construction the fabric need not be opaque. Any fabrichaving a suitably-smooth surface may be used, because in this instanceanother sheet or strip of opaque material G is used in conjunction withthe fabric A and its sensitized coating B, and the ends of the paper Gextend beyond the sensitively-coated fabric A, so as to afford thelapping terminals when wound upon the spool, as above described. Thefabric A is of course suitably attached to the paper G, and theindications for the exposures and places for cross-cutting are made uponthe back of the paper G.

' strip of opaque material having directly applied and permanentlyattached to one side thereof a coating of photographically-sensitivematerial and having designations on the other side, the ends of theopaque material extending beyond the part of the sensitive coating uponwhich the exposures are to be made.

3. A flanged spool having Wound upon it a strip of opaque material, oneside of Which is partly covered With a coating ofphotographically-sensitive material permanently attached thereto andapplied directly thereon, leaving uncoated ends of suflicient length toprotect the photographicallysensitive coating from the action of lightwhen coiled upon the flanged spool, and designations on the other orback side of the opaque material.

4. A flanged spool having wound upon it a strip of opaque materialhaving designations on one side and having attached to its other side ashorter strip of paper having photographically=sensitive materialdirectly applied thereon and permanently attached thereto.

5. As a new article of manufacture a sheet or strip of opaque materialhaving a coating of photographically sensitive material directly appliedon one side thereof and permanently attached thereto and havingdesignations on the back or uncoated side.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

RICHARD A. ANTHONY.

Witnesses:

F. A. ANTHONY, L. S. VAN NOSTRAND.

